I worked in a grocery store for a while. There was something smelly in the store and it took us a couple days to find it. Someone hid some meat (it might have been shrimp and/or beef) they didn’t want behind 4 bags of dog food at the very back of the shelf.
Yes. We ended up lost on our hike while using it.
Second time was better, we were geocaching and were able to find quite a few if them. Although it might have been easier to find using points on a map with a compass.